Improvement in alarm-locks



I 1. wALTnN. Alarm-Lock.

No. 159,129. Pafentedlamzmsn.

VIITNEssEs 1 ATTUBNEYS.

THE GRAPHIC CO, PHOTO-LRTMJSKLI PARK PL^CE,N.Y.

-UNITED STATES PATENT OFFICE.

JONATHAN WALTON, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN ALARM-LOCKS.V

Specilication forming part of Letters Patent No. 159, 129, dated January26, 1875; application filed July 3, 1874.

To all whom it may concern:

Be it known that I, JONATHAN WALToN, of Brooklyn, in the county of Kingsand State of New York, have invented a new and useful Improvement inCombined Lock, Latch, Bolt, and Alarm, of which the following is aspecification:

VFigure l is a face view of my improved lock, the face-plate beingremoved, and part being broken away, to show the construction. Fig. 2 isan edge view of the-same, part being broken away to show theconstruction, and partly in section through the line xx, Fig. l. Fig. 3is a detail view of the under side of the inner plate.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved device which maybe used as a lock, a latch, a bolt, and an alarm, as may be required,and which shall be simple in construction and reliable in use in eithercapacity.

The invention will first be fully described, and then pointed out in theclaims.

A is the base-plate of the lock, which is secured to the door by screwsal, as shown in Fig. 1. B is the knob-spindle, which passes through theplate A and through the door, and to which the knobs are attached in theordinary way. The spindle B passes through and operates the armed hub G,against the end parts of which rest the shoulders of the forked end ofthe sliding rod D, which is held against the hub O by a spring, d1,coiled around it, and the forward end of which rests against a guideprojection, a2, for said rod, formed upon the plate A. The lower arm orprong of the slide D has a toe, d2, formed upon it, which enters a notchin the upper edge of the rear end of the sliding bolt E, which haslongitudinal slots e1 e2 formed in it to receive the screws or pins e3c4, upon which it works. In the bolt E, at the upper side of the forwardend of the slot el, is formed a notch, e5, to enable the said rear endto be pushed down out of gear with the toe d2 of the slide D, so thatthe bolt E cannot be operated by the knobspindle B. The rear end of theboltE is held up against the slide D by the spring F attached to theplate A, and which presses against the lower edge of said bolt E. G isthe catch, which is hinged to the forward edge of a baseplate, g1, bymeans ot' which it is secured to the door-casing. The catch G is held inan erect position by a spring, g2, secured beneath the base-plate gl,and the end of which passes up through a slot in the said plate g', andrests against the outer side of the said catch G. H is the latch, whichis formed solid upon the forward end ot' the base-plate A, and the innerside ot' which is beveled oft in the usual way, so as when the door isswung shut to push back the catch G, and fasten the door. In the lowerpart of the catch G is formed a small chamber, in which is placed alarge-headed pin, I, the body of which passes through a hole in theouter side of the catch G, and which is kept from dropping out of saidchamber by a small head formed upon its outer end, as shown in Fig.,2.By this construction when the pin I is held forward, and the bolt E ispushed outward, the end of the bolt E strikes against the head of thepin I, and pushes the catch G outward, allowing the door to be opened.When the pin I is left free the outward movement of the bolt E simplypushes the pin I outward, and does not move the catch G. J is a button,pivoted to the outer side of the catch G, so that it may be turned downover the outer end of the pin I to hold it, so that the outward movementof the bolt E may push back the catch G, and allow the door to open.When the button J is turned back to release the pin I, its free endstrikes and rests upon a projection formed upon or in a recess formed inthe plate g1, so that the catch G cannot be pushed back, thus forming adouble lock. The outer part ot the bolt E is made with an offset, sothat it may strike the head of the pin I squarely. The rear part of thebolt E is pushed down from the toe d2 of the slide D by a block, K,which, when in one position, allows the said bolt to rest against thesaid slide, and when turned one-quarter around pushes and holds the boltaway from said slide, locking the door. The block K is attached to theforward end of the post L, which passes through and is pivoted in a holein the plate A, and the rear end of which projects to serve as a pivotto the key. To the post L, at the other or outer side of the-plate A, isattached E l59,l29

the stop-plate M, the movement of which is limited by a pin, m1,attached to the plate A, and which is held in position to hold the blockK steady in either position by two pins, m2, attached to the plate M,and which enter a1- ternately a notch formed in the bar N, which ispivoted to the plate A, and held forward against the pins m2 by aspring, O, attached to it, and the free end of which rests against apin, o', attached to the plate A. The lochbar N is raised from the pinm2 to allow the blocks K M to be turned by the key striking against it.To the forked end of the slide D is pivoted the end of a push-bar, l?,the forward end of which rests against a shoulder of the block Q, andwhich is held up against said block by a spring, B, also attached to theslide D. rThe shoulder of the block Q is held forward by the spring Sattached to the plate A, and which rests against a.toe formed upon saidblock. The block Q is pivoted to the plate A, and its movement islimited by a pin, q', attached to said plate A, and which enters a notchin said block Q. To the block Q is attached or upon it is formed an arm,T, upon the outer end of which is formed, or to it is attached, ahammer-head, U. By this construction when the knob-spindle B is turnedthe bar P pushes against the shoulder of the block Q, pushing back thespring S. As the end of the bar P slips from the shoulder of the blockQ, the said block is thrown back to its place by the spring S, whichprojects the hammer-head against a gong, and sounds an alarm. V is ablock, pivoted to the plate A, and upon the edge of the lower part ofwhich are formed two faces, at different distances from its center, sothat when the said block is turned into one position it will allow thebar P to rest against the block Q, and when turned into another positionit will hold the said bar P away from the said block Q, thus enablingthe alarm to be connected with, and disconnected from, the knob-spindle,when desired. rEhe blockV is operated by a rod, W, passing out at theend of the lock-case. rlhe lock-case X may be made of bellmetal, toadapt it to serve as a gong, in which case it is supported by beingattached at one end to a ange attached to or formed upon one end of theplate A; or an ordinary gong, Y, may be attached to the door in such aposition as to be struck by the hammer-head U, as may be desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination of the pin I and button J with the hinged catch G g1g2 and a sliding bolt, E, operated by the knob-spindle B, substantiallyas herein shown and described.

2. The combination of the spring F, the block K, the post L, the plateM, the stop-pins ml m2, the pivoted bar N, and the spring O, and stopof, with the sliding bolt E, to enable the said bolt E to be thrown intoand out of gear with the knob-spindle by a key, substantially as hereinshown and described.

3. The gong X, constructed, substantially as herein shown and described,to adapt it to serve also as a cap to the lock mechanism, as set forth.

JONATHAN WALTON.

Witnesses:

JAMES T. GRAHAM, T. B. MosHER.

